Initial commit of NetBSD port

5 files changed, 69 insertions, 5 deletions

diff --git a/src/build_settings.cpp b/src/build_settings.cpp
index 30d6f0b3c..cd57816ab 100644
--- a/src/build_settings.cpp
+++ b/src/build_settings.cpp
@@ -18,6 +18,7 @@ enum TargetOsKind : u16 {
 	TargetOs_essence,
 	TargetOs_freebsd,
 	TargetOs_openbsd,
+	TargetOs_netbsd,
 	TargetOs_haiku,
 	
 	TargetOs_wasi,
@@ -79,6 +80,7 @@ gb_global String target_os_names[TargetOs_COUNT] = {
 	str_lit("essence"),
 	str_lit("freebsd"),
 	str_lit("openbsd"),
+	str_lit("netbsd"),
 	str_lit("haiku"),
 	
 	str_lit("wasi"),
@@ -549,6 +551,14 @@ gb_global TargetMetrics target_openbsd_amd64 = {
 	str_lit("e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"),
 };
 
+gb_global TargetMetrics target_netbsd_amd64 = {
+	TargetOs_netbsd,
+	TargetArch_amd64,
+	8, 8, 8, 16,
+	str_lit("x86_64-unknown-netbsd-elf"),
+	str_lit("e-m:w-i64:64-f80:128-n8:16:32:64-S128"),
+};
+
 gb_global TargetMetrics target_haiku_amd64 = {
 	TargetOs_haiku,
 	TargetArch_amd64,
@@ -655,6 +665,7 @@ gb_global NamedTargetMetrics named_targets[] = {
 	{ str_lit("freebsd_amd64"),       &target_freebsd_amd64  },
 
 	{ str_lit("openbsd_amd64"),       &target_openbsd_amd64  },
+	{ str_lit("netbsd_amd64"),        &target_netbsd_amd64   },
 	{ str_lit("haiku_amd64"),         &target_haiku_amd64    },
 
 	{ str_lit("freestanding_wasm32"), &target_freestanding_wasm32 },
@@ -1410,6 +1421,8 @@ gb_internal void init_build_context(TargetMetrics *cross_target, Subtarget subta
 			metrics = &target_freebsd_amd64;
 		#elif defined(GB_SYSTEM_OPENBSD)
 			metrics = &target_openbsd_amd64;
+		#elif defined(GB_SYSTEM_NETBSD)
+			metrics = &target_netbsd_amd64;
 		#elif defined(GB_SYSTEM_HAIKU)
 			metrics = &target_haiku_amd64;
 		#elif defined(GB_CPU_ARM)
@@ -1523,6 +1536,9 @@ gb_internal void init_build_context(TargetMetrics *cross_target, Subtarget subta
 		case TargetOs_openbsd:
 			bc->link_flags = str_lit("-arch x86-64 ");
 			break;
+		case TargetOs_netbsd:
+			bc->link_flags = str_lit("-arch x86-64 ");
+			break;
 		case TargetOs_haiku:
 			bc->link_flags = str_lit("-arch x86-64 ");
 			break;
@@ -2002,6 +2018,7 @@ gb_internal bool init_build_paths(String init_filename) {
 		case TargetOs_essence:
 		case TargetOs_freebsd:
 		case TargetOs_openbsd:
+		case TargetOs_netbsd:
 		case TargetOs_haiku:
 			gb_printf_err("-no-crt on unix systems requires either -default-to-nil-allocator or -default-to-panic-allocator to also be present because the default allocator requires crt\n");
 			return false;
diff --git a/src/checker.cpp b/src/checker.cpp
index 244e7efbd..77d894624 100644
--- a/src/checker.cpp
+++ b/src/checker.cpp
@@ -1010,6 +1010,7 @@ gb_internal void init_universal(void) {
 			{"FreeBSD",      TargetOs_freebsd},
 			{"Haiku",        TargetOs_haiku},
 			{"OpenBSD",      TargetOs_openbsd},
+			{"NetBSD",       TargetOs_netbsd},
 			{"WASI",         TargetOs_wasi},
 			{"JS",           TargetOs_js},
 			{"Freestanding", TargetOs_freestanding},
diff --git a/src/gb/gb.h b/src/gb/gb.h
index 868e11a16..4e05a3a0a 100644
--- a/src/gb/gb.h
+++ b/src/gb/gb.h
@@ -83,6 +83,10 @@ extern "C" {
 		#ifndef GB_SYSTEM_OPENBSD
 		#define GB_SYSTEM_OPENBSD 1
 		#endif
+	#elif defined(__NetBSD__)
+		#ifndef GB_SYSTEM_NETBSD
+		#define GB_SYSTEM_NETBSD 1
+		#endif
 	#elif defined(__HAIKU__) || defined(__haiku__)
 		#ifndef GB_SYSTEM_HAIKU
 		#define GB_SYSTEM_HAIKU 1
@@ -208,7 +212,7 @@ extern "C" {
 	#endif
 	#include <stdlib.h> // NOTE(bill): malloc on linux
 	#include <sys/mman.h>
-	#if !defined(GB_SYSTEM_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__HAIKU__)
+	#if !defined(GB_SYSTEM_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__HAIKU__)
 		#include <sys/sendfile.h>
 	#endif
 	#include <sys/stat.h>
@@ -250,6 +254,11 @@ extern "C" {
 	#define lseek64 lseek
 #endif
 
+#if defined(GB_SYSTEM_NETBSD)
+	#include <stdio.h>
+	#define lseek64 lseek
+#endif
+
 #if defined(GB_SYSTEM_HAIKU)
 	#include <stdio.h>
 	#include <pthread.h>
@@ -817,6 +826,13 @@ typedef struct gbAffinity {
 	isize thread_count;
 	isize threads_per_core;
 } gbAffinity;
+#elif defined(GB_SYSTEM_NETBSD)
+typedef struct gbAffinity {
+	b32 is_accurate;
+	isize core_count;
+	isize thread_count;
+	isize threads_per_core;
+} gbAffinity;
 #elif defined(GB_SYSTEM_HAIKU)
 typedef struct gbAffinity {
 	b32   is_accurate;
@@ -3267,6 +3283,31 @@ isize gb_affinity_thread_count_for_core(gbAffinity *a, isize core) {
 	GB_ASSERT(0 <= core && core < a->core_count);
 	return a->threads_per_core;
 }
+
+#elif defined(GB_SYSTEM_NETBSD)
+#include <unistd.h>
+
+void gb_affinity_init(gbAffinity *a) {
+	a->core_count       = sysconf(_SC_NPROCESSORS_ONLN);
+	a->threads_per_core = 1;
+	a->is_accurate      = a->core_count > 0;
+	a->core_count       = a->is_accurate ? a->core_count : 1;
+	a->thread_count     = a->core_count;
+}
+
+void gb_affinity_destroy(gbAffinity *a) {
+	gb_unused(a);
+}
+
+b32 gb_affinity_set(gbAffinity *a, isize core, isize thread_index) {
+	return true;
+}
+
+isize gb_affinity_thread_count_for_core(gbAffinity *a, isize core) {
+	GB_ASSERT(0 <= core && core < a->core_count);
+	return a->threads_per_core;
+}
+
 #elif defined(GB_SYSTEM_HAIKU)
 #include <unistd.h>
 
diff --git a/src/path.cpp b/src/path.cpp
index b07f20870..2f016a578 100644
--- a/src/path.cpp
+++ b/src/path.cpp
@@ -341,7 +341,7 @@ gb_internal ReadDirectoryError read_directory(String path, Array<FileInfo> *fi)
 
 	return ReadDirectory_None;
 }
-#elif defined(GB_SYSTEM_LINUX) || defined(GB_SYSTEM_OSX) || defined(GB_SYSTEM_FREEBSD) || defined(GB_SYSTEM_OPENBSD) || defined(GB_SYSTEM_HAIKU)
+#elif defined(GB_SYSTEM_LINUX) || defined(GB_SYSTEM_OSX) || defined(GB_SYSTEM_FREEBSD) || defined(GB_SYSTEM_OPENBSD) || defined(GB_SYSTEM_NETBSD) || defined(GB_SYSTEM_HAIKU)
 
 #include <dirent.h>
 
diff --git a/src/threading.cpp b/src/threading.cpp
index fbe8997d1..77aa8edf7 100644
--- a/src/threading.cpp
+++ b/src/threading.cpp
@@ -627,8 +627,12 @@ gb_internal void thread_set_name(Thread *t, char const *name) {
 #elif defined(GB_SYSTEM_FREEBSD) || defined(GB_SYSTEM_OPENBSD)
 	pthread_set_name_np(t->posix_handle, name);
 #else
-	// TODO(bill): Test if this works
-	pthread_setname_np(t->posix_handle, name);
+	#ifdef GB_SYSTEM_NETBSD
+		// TODO(phix): Could be that libs are to old on NetBSD? Just ignore for now.
+	#else
+		// TODO(bill): Test if this works
+		pthread_setname_np(t->posix_handle, name);
+	#endif
 #endif
 }
 
@@ -901,10 +905,11 @@ gb_internal void futex_wait(Futex *f, Footex val) {
 	} while (f->load() == val);
 }
 
-#elif defined(GB_SYSTEM_HAIKU)
+#elif defined(GB_SYSTEM_HAIKU) || defined(GB_SYSTEM_NETBSD)
 
 // Futex implementation taken from https://tavianator.com/2023/futex.html
 
+#include <signal.h>
 #include <pthread.h>
 #include <atomic>